United Internet AG

Are you passionate about shaping the future of data center networks with modern technologies and automation? As a Network Engineer, you'll operate and evolve our next-generation datacenter network systems—powering millions of users across WEB.DE and...

In this role, you will ensure the stable, scalable operation of modern ML and GenAI systems and build an end-to-end delivery pipeline from development to production deployment. Development and operation of CI/CD/CT pipelines for machine learning models...

From the initial planning phase through to successful implementation, you oversee all stages of a project (requirements analysis, planning, development, testing, rollout, handover to operations). They harmonize stakeholder interests and coordinate...

For our Database & Data Management Platforms team in the Operations South division, we are immediately seeking a Lead Database Engineer (m/f/d) for the Frankfurt am Main or Krefeld location. In this role, you will assume technical responsibility for our...

For the strategic expansion of our Customer-Sales-Analytics landscape, we are seeking an experienced Data & Tracking Solution Architect who will assume overall technical responsibility for the Customer-Sales-Tracking concept, thereby laying the...

Starting in August 2027, we are looking for IT specialists (m/f/d) in the field of Application Development at our Montabaur location. Through a combination of theory and practice, you will learn from professionals what matters in your training...

Starting in October 2027, United Internet, in cooperation with Baden-Württemberg Cooperative State University (DHBW), offers study places for the dual degree program in Computer Science at the Karlsruhe campus. By combining a theoretical university...

Do you have experience in high-availability 24/7 operation of web, mobile, or financial services with millions of customers and high traffic? Are you comfortable working in both bare metal and virtualized or containerized environments? For you,...

Starting in September 2027, we are looking for IT specialists in application development (m/f/d) at our Karlsruhe location. Through a combination of theory and practice, you will learn from professionals what matters in your training profession and will...

You can expect a balanced combination of demanding operational tasks and cross-disciplinary professional development. About half of your time will be spent analyzing and handling complex incidents, service requests, and escalations in the Digital...

Are you interested in Cloud Engineering? Are you motivated to build our private On Premises Kubernetes Cloud platform on Bare Metal servers - with over 85,000 CPU cores - and thus serve more than 42 million users? Would you like to contribute to further...

You develop and operate our Kubernetes platform on a bare-metal infrastructure with over 85,000 CPU cores. You automate and optimize platform, build, and deployment processes using modern CI/CD methods. You manage and improve cloud-native platform...

Would you like to get to know the daily work of UX Researchers? Is good work-life balance between studies and working student activities important to you? Do you want to apply your theoretical knowledge in practice? Then become part of our UX team and...

Would you like to get to know the daily work of UX Designers and UX Researchers? Is good work-study balance important to you? Do you want to apply your theoretical knowledge in practice? Then become part of our UX team and support us both in daily...

Our well-established team is looking for reinforcement at the locations Frankfurt am Main or Krefeld. Look forward to interesting tasks in a dynamic work environment. Active further development of our internal CRM and workflow management systems....